JP2694098B2 - How to install heavy objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for hoisting a heavy object and installing it at a predetermined position, and in particular, a heavy object such as an artificial fishing reef in the sea or at the time of corrugation or a concrete block for forming a wave-eliminating block A method suitable for hoisting and installing

[0002]

2. Description of the Related Art Conventionally, when a heavy object such as a concrete block is lifted by a crane and installed at a predetermined place, a
As shown in (1), one end of the sub wire 4 was attached to the hook 2 of the heavy object 1 via the safety hook 3, and the other end of the sub wire 4 was suspended from the hook 5 of the crane. In this way, the hook 5 is lifted by the main wire 6 of the crane.

[0003]

However, in the above-described method of installing the heavy load 1 by the crane, the work of removing the safety hook 3 from the hook 2 is performed after the heavy load 1 is installed at a predetermined location. The direct worker is the heavy object 1
For example, when constructing structures such as fishing reefs in the sea or when installing concrete blocks for wave-dissipation at the time of corrugation during seawall construction, in the former case, the diver's body is affected by wind and high waves. Has a risk of being injured by colliding with a heavy object, entanglement of an air hose, and the like. In the latter case, there is a risk of being caught by the rushing waves and falling from the heavy object 1 into the sea.

Further, the interlock rope 6a is attached to the safety hook 3, and an operator pulls one end of the interlock rope 6a at a safe place away from the heavy object 1 to hook the safety hook 3. It can be considered to remove it from the stopper 2, but when the heavy object 1 is lifted by a crane, the heavy object 1 rotates in the air and the auxiliary wire 4 and the intervening rope 6a are entangled in a complicated manner, and Since 6a cannot be pulled normally, there is a drawback that the safety hook 3 cannot be smoothly removed from the hook 2.

The present invention has been made in view of the above-mentioned problems, and an auxiliary wire for remotely removing a safety hook from a heavy object hooking device and for operating the safety hook is lifted. It is an object of the present invention to provide a method for efficiently installing a heavy object without getting tangled during work.

[0006]

A frame assembled in a polygonal shape and at least two diagonal lines located above the frame.
In four places, the hook is attached to the lower end of the main wire of the crane.
A hooking device arranged to be suspended through a wire, and a hooking device arranged below the frame and above the frame.
A hook provided at a corresponding position and an auxiliary wire for removing the safety hook from the hook for the heavy object are inserted so that the vertical movement of the hook is restricted .
A sling jig consisting of a guide section arranged on the outside is formed, and a safety hook that is detached from the heavy-weight hook by remote control via an auxiliary wire is formed on the hook at the lower part of the frame. After suspending and forming the jig in this way, the safety hook is hooked on the heavy object hooking tool, and the main wire is rolled up while the auxiliary wire is slackened by the crane and the slinging jig is mounted. After lifting the heavy object through a tool and installing the heavy object at a predetermined position, the main wire of the crane is slightly loosened and the auxiliary wire is rolled up to suspend the safety hook from the heavy object hooking tool. Exists in removing.

[0007]

According to the method of installing a heavy object such as a block according to the present invention, the safety hook can be remotely removed from the heavy object hooking device by winding up the auxiliary wire with a crane after the installation of the heavy object. . This eliminates the dangerous work of an operator moving to a heavy object and removing the safety hook. Further, by adding the auxiliary wire to the safety hook, the problem that the heavy wire rotates in the air and the auxiliary wire and the auxiliary wire of the crane are entangled is eliminated by the sling jig. In addition, the jig frame
At least four diagonally located locations on top
The hook for the auxiliary wire that was installed and the auxiliary
With the guide part for the auxiliary wire, the auxiliary wire and the auxiliary wire
The ear and the
You can prevent it from getting stuck. Also, the hook at the bottom of the frame is
Since it is inside the guide part, it can be used to lift heavy objects.
With the auxiliary wire to remove the ear rope and safety hook
Entanglement is also prevented.

[0008]

Next, the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram showing a usage state of a slinging jig according to the present invention, and FIG. 2 is a plan view of the slinging jig.
3 is a vertical sectional view showing the structure of the safety hook, and FIG. 4 is a side view. In the figure, reference numeral 3 is a safety hook, 3a
Is a hook, 6 is a main wire, 7 is an auxiliary wire, 10 is a jig for slinging, 11 is a frame, 12 is a hook for lifting the jig for slinging, and 13 is a hook for lifting heavy objects. A stopper, 14 is a guide portion provided on the frame, 21 is a safety hook opening mechanism, 22 is a hook body, 23 is a rotating shaft,
Reference numeral 24 is one arm portion, 25 is the other arm portion, 26 is a hanging hole for suspension, 27 is a latch hook, 30 is a hook metal fitting, 31 is a guide plate, and 32 is a guide path. The parts corresponding to the conventional example are given the same reference numerals.

In the method of installing a heavy object such as a block according to the present invention, a slinging jig 10 and a safety hook 3 which can be removed by remote control are formed to lift and install the heavy object 1. First, the constructions of the slinging jig 10 and the safety hook 3 will be sequentially described.

As shown in FIG. 2, the slinging jig 10 has a frame 11 assembled into a rectangular shape in plan view with a grooved steel 11a facing backward, and a crane main wire 6 above the frame 11.
Four hooks 12 provided for suspending on the hook 5 at the lower end via the auxiliary wire 4 and four hooks 12 provided at the lower part of the frame body 11 corresponding to the hooks 2 of the object 1 to be lifted. A guide provided on the frame 11 so as to restrict the movement in the vertical direction by inserting an individual hooking tool 13 and an auxiliary wire 7 for removing the safety hook 3 from the hooking tool 2 of the lifting object 1. It comprises the unit 14.

The details of each part of the rigging jig 10 will now be described. The frame 11 has a channel steel 11a turned back, and a steel plate 11d is erected and welded on the upper and lower surfaces, as shown in FIG. It is arranged in an X-shape, fixed with a reinforcing plate 11b, and is provided at each end of the channel steel 11a with an angle steel 11c and welded to form a rectangular frame.

A hook 12 provided above the frame 11
As shown in FIG. 1, the channel steel 11a, which is turned backward,
At the end of 11a, a plate provided with a hooking hole 12a is sandwiched and fixed. The same applies to the hooks 13, and in this example, one plate is projected from the upper and lower surfaces of the steel plate 11a to form the hooks 12 and 13.

The guide portion 14 serves as a passage for the auxiliary wire 7 shown in FIG. 1, and as shown in FIG.
The shafts 15 and 15 are rotatably supported by the side walls of the channel steels 11a and 11a facing backward with a gap, and the rollers 16 are rotatably loosely fitted to the shafts 15 to form vertical guide passages. It was formed.

The hooks 17 and the through holes 18 shown in FIGS. 1 and 2 are used for manufacturing the frame 11 and for carrying the slinging jig 10.

Next, the opening mechanism 21 of the safety hook 3
As shown in FIGS. 3 to 4, the hook main body 22 and an upper portion of the hook main body 22 are rotatably supported by a rotary shaft 23 pivotally supported by a latch hook 27. The safety hook 3 consisting of a latch hook 27 having the opening 22a of the hook main body 22 closed at 24 and a suspension hooking hole 26 provided at the other arm 25 is suspended by a wire rope 19, and the hook main body is suspended. In a safety hook opening mechanism in which the safety hook 3 is removed from the heavy-duty hook by rotating the hook 22, the safety hook 3 is rotatably pivotally attached by a hook fitting 30, and the hook fitting is provided. The safety hook 3 is suspended by a wire rope 19 via 30, and a guide plate 31 provided with a guide path 32 is projectingly provided from a side end of the hook metal 30, and a hook portion 3 a is provided on the hook body 22. The guide wire is provided along with the auxiliary wire 7. 1 is inserted through the guide path 32 and is connected to the hook portion 3a, and the hook body 22 of the safety hook is rotated by the auxiliary wire 7 to remove the safety hook 3 from the hook 2 of the heavy object 1. It is configured in.

The structure of each part of the opening mechanism 21 will be described in more detail. The hook 30 is a flat plate made of metal having a predetermined thickness. The hooks 30 are arranged so as to face each other and support the shafts 30a and 30b. There is. An end of a wire rope 19 suspended from a crane is rotatably attached to the shaft 30a.

Further, the suspension hooking hole 26 of the latch hook 27 is fitted on the shaft 30b, the shaft 30b is in a loosely fitted state, and the safety hook 3 is rotatable.

The guide plates 31 are provided so as to project from the side surfaces of the retaining metal fittings 30 so as to be opposed to each other, and pins 31a and 31b are laterally bridged in the gaps to form vertical guide paths 32.

The safety hook 3 is provided with a hook portion 3a at the lateral lower part of the hook body 22 of the conventional safety hook. A through hole is formed in the hook 3a,
An end of an auxiliary wire 7 suspended from a crane is hooked in this through hole.

The auxiliary wire 7 is inserted into the guide path 32 of the guide plate 31 and is connected to the hook 3a so that the auxiliary wire 7 and the wire rope 19 are not entangled. Has been done.

A method of installing a heavy object such as a concrete block in the sea or at the time of corrugation by using the sling jig 10 thus formed and the safety hook 3 will be described.

Referring to FIG. 1, one end of the auxiliary wire 4 is connected to the hooking tool 12 on the upper portion of the slinging jig 10 and the other end is hooked on the hook 5 of the crane. Then, the safety hooks 3 suspended from the hooking tools 13 below the slinging jig 10 via wire ropes 19 are hooked on the four hooking tools 2 of the heavy load 1.

One end of the auxiliary wire 7 is wound around the crane, and the other end is guided by the guide portion 14 of the jig 10 for slinging.
And is connected to the hook 3a of the safety hook 3, and is loosened while the heavy object 1 is being lifted.

When the main wire 6 is wound up by a crane and the heavy object 1 is lifted in the air through the sling jig 10, even if the heavy object 1 rotates in a horizontal plane, the sling jig 10 is also Auxiliary wire 7 while rotating together
Is inserted through the guide portion 14, the auxiliary wire 7
And the wire rope 19 and the auxiliary wire 4 are not entangled.

Therefore, after the heavy load 1 is lowered to a predetermined place by the crane, the hook 5 is further lowered to loosen the wire rope 19 to release the tension of the safety hook 3, and then the auxiliary wire 7 is attached to the crane. The safety hook 3 is removed from the hook 2 by pulling with. Then, the heavy wire 1 is placed at a predetermined position by winding up the main wire 6 with a crane, and the slinging jig 10 is moved to lift the next heavy load. Such lifting work is repeated to install the heavy load 1.

The one shown in FIG. 5 (a) relates to another embodiment, in which each of the auxiliary wires 7 is attached to the jig 1 for slinging.
At the lower position of 0, the bundle was once bundled to form a single auxiliary wire 7a, which was inserted into the guide hole 14a (see FIG. 2) in the gap inside the reinforcing plate 11b of the sling jig 10 and wound around the crane. It is a thing. In this way, the guide hole 14a for the auxiliary wire 7a only needs to be provided in the sling jig 10 at one place, and the structure of the sling jig 10 is simplified.
Further, since only one auxiliary wire 7a needs to be wound up, the crane can be easily operated.

Further, as shown in FIG. 5B, if leg portions 20 extending downward from the corners of the sling jig 10 are provided,
The rigging jig 10 becomes self-supporting, which facilitates maintenance, inspection, transportation, and other handling of the rigging jig 10. Further, although not shown, the jig 10 for slinging
Needless to say, the shape is not limited to a rectangular shape, and may be a polygonal shape or a circular shape. FIG. 6 shows a hexagonal shape. According to the installation method according to the present invention, the safety hook 3 can be easily removed from the heavy object 1 by remote control, and the work efficiency is improved without the entanglement of the auxiliary wire 7 or the like, which is a conventional installation method. Compared to this, the construction period will be shortened by about 40%.

[0028]

As described above, the weight according to the present invention
To install an object, use a special jig to remove the safety hook.
Auxiliary wire for the jig
The guide part that should be on the outside of the hanging wire rope
Form the provided jig for slinging and lift and install heavy objects
Since it is a method, a secondary wire and wire can be
Ties between the ear ropes and the auxiliary wires located outside them
This will prevent clogging and will allow you to operate this auxiliary wire smoothly and remotely.
Can be made and can be easily removed from the hook of heavy objects
This is an excellent effect. Further, as a result, since the safety hook can be remotely removed from the hook of the heavy object after the heavy object is installed, the operator does not have to transfer to the heavy object each time the object is installed, and the safety is improved. The work efficiency will be improved and the construction period will be significantly shortened.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a use state of a slinging jig of the present invention.

FIG. 2 is a plan view of a slinging jig.

FIG. 3 is a front view showing a main part of a safety hook opening mechanism according to the present invention.

FIG. 4 is a left side view of the same.

FIG. 5 is an explanatory view (a) of use and a front view (b) of another embodiment of a slinging jig.

FIG. 6 is a plan view (a), a cross-sectional view of a channel steel (b), and a front view (c) of the rigging jig according to still another embodiment of the rigging jig.

FIG. 7 is a front view showing how a heavy object is being lifted by a conventional installation method.

[Explanation of symbols]

3 Safety hook, 3a Hook, 4 Secondary wire, 5
Hooks, 6 main wires, 7 auxiliary wires, 10 sling jigs, 11 frames, 12 hooks for lifting slings, 13 hooks for lifting heavy objects, 14 frames Guide part, 21 safety hook opening mechanism, 22 hook body, 23 rotating shaft, 2
4 one arm part, 25 other arm part, 26 suspension hook hole, 27 latch hook, 30 hook metal fitting, 31 guide plate, 32 guide path.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadashi Suzuki 2-2 Kita 3jo Higashi, Chuo-ku, Sapporo City Toda Construction Co., Ltd. Sapporo Branch (72) Ryogen Miyoshi 2 Kita 3-jo Higashi, Chuo-ku, Sapporo 2-72 2 Toda Construction Co., Ltd. Sapporo Branch (56) References JP-A-60-97131 (JP, A) Actual development 55-132084 (JP, U) Actual development 1-90782 (JP, U)

Claims (1)

(57) [Claims] 1. A frame assembled in a polygonal shape, and at least two diagonal lines located at an upper part of the frame.
To the hook at the bottom of the main wire of the crane
A hooking device arranged to be suspended via a hook, and a hooking device arranged below the frame and above the frame.
A hook provided at a corresponding position, and an auxiliary wire for removing the safety hook from the hook for the heavy object are inserted so that the vertical movement of the hook can be restricted so as to restrict the movement in the vertical direction . A sling jig consisting of a guide section arranged on the outside is formed, and a safety hook that is detached from the heavy-weight hook by remote control via an auxiliary wire is formed on the hook at the lower part of the frame. After suspending and forming the jig in this way, the safety hook is hooked on the heavy object hooking tool, and the main wire is rolled up while the auxiliary wire is loosened by the crane, and the slinging jig is mounted. After lifting the heavy object through a tool and installing the heavy object at a predetermined position, the main wire of the crane is slightly loosened and the auxiliary wire is rolled up to suspend the safety hook from the heavy object hooking tool. Heavy items characterized by removal Installation method.